- Adaway (Adblocker; just in case)
- Address Book
- Browser (long term Chrome user, but the new Firefox mobile feels very nice)
- Chat Client (Conversations)
- Clock
- Connect Bot (for SSH connections)
- Dav-Droid (Sync client)
- Email client
- F-Droid (app store for open source software)
- Calendar
- Camera & Gallery
- KDE-Connect (e.g. for desktop notifications)
- Nextcloud client
- Omsand+ (Google Maps alternative)
- Play Store
- Phone
- Spotify
- Termux (a shell that is actually usable on a smartphone)
- Text/SMS
- Titanium Backup
- Xodo (nice PDF viewer and annotator)
With that setup I can sync my data with other devices, communicate (voice, text, email), enjoy basic entertainment (Spotify) and use some cli if it is required, while not having all that attention stealing crap on my phone.